| 释义 |
Definition of mesoderm in English: mesodermnoun ˈmɛzə(ʊ)dəːmˈmiːsə(ʊ)dəːmˈmɛsə(ʊ)dəːmˈmiːzə(ʊ)dəːm mass nounEmbryology The middle layer of cells or tissues of an embryo, or the parts derived from this (e.g. cartilage, muscles, and bone). Example sentencesExamples - Teratomas are germ cell tumors composed of various tissue elements representing more than one embryonic layer (ectoderm, mesoderm, and endoderm).
- Teratoma typically contains tissues derived from all 3 germinal layers, whereas dermoid cyst presumably originates from ectoderm and mesoderm.
- The stem cell lines also retain the ability, throughout the culture, to differentiate into tissue-derived endoderm, mesoderm and ectoderm.
- The most affected tissue being dorsal mesoderm; the notochord is disrupted and the tailbud fails to form.
- Endoderm and mesoderm form from the lower layer of cells.
- Derived from embryonic mesoderm, mesenchyme is the first connective tissue formed.
- Cells from the ventrolateral dermomyotome migrate away from the midline forming a population of axially derived cells that differentiate within the lateral mesoderm.
- We have used experimental manipulation of chick embryos to test the causal role of Hox genes in patterning derivatives of the paraxial mesoderm.
- By the time segmentation is complete, strong mxp expression is detected in both ectoderm and mesoderm of the maxillary and labial limb buds.
- Crystal cells constitute a class of hemocytes derived from the head mesoderm.
- The stem cells for hematopoiesis in mammals are derived from mesoderm in the yolk sac blood islands and a region of the aorta.
- Acrochordons, or skin tags, are derived from ectoderm and mesoderm and represent a hyperplastic epidermis.
- Because neoblasts are likely derived from embryonic stem cells, a stem cell system may be even the original mode of mesoderm formation in the embryo.
- Structures derived from ectoderm, mesoderm, and endoderm are commonly represented.
- A similar pair of parachordal cartilages develop posteriorly from mesoderm, flanking the notochord.
- The cells of the visceral mesoderm and dorsal vessel also express both genes.
- The mesoderm also provides the mesenchyme (by sinking of cells from its epithelium into the extracellular matrix) from which organ development becomes possible.
- Clearly the establishment of independent Hox codes in the paraxial and lateral plate mesoderm would have significance for both the development and the evolution of vertebrates.
- Why is the origin of mesoderm from hypoblast in some groups not regarded as a secondary adaptation?
- Expression is also detected variously in visceral endoderm, and anterior mesoderm and endoderm of the gut and pharynx in some vertebrates and amphioxus.
Origin Late 19th century: from meso- 'middle' + Greek derma 'skin'. Definition of mesoderm in US English: mesodermnoun Embryology The middle layer of an embryo in early development, between the endoderm and ectoderm. Example sentencesExamples - The stem cell lines also retain the ability, throughout the culture, to differentiate into tissue-derived endoderm, mesoderm and ectoderm.
- Teratomas are germ cell tumors composed of various tissue elements representing more than one embryonic layer (ectoderm, mesoderm, and endoderm).
- Acrochordons, or skin tags, are derived from ectoderm and mesoderm and represent a hyperplastic epidermis.
- Teratoma typically contains tissues derived from all 3 germinal layers, whereas dermoid cyst presumably originates from ectoderm and mesoderm.
- A similar pair of parachordal cartilages develop posteriorly from mesoderm, flanking the notochord.
- Why is the origin of mesoderm from hypoblast in some groups not regarded as a secondary adaptation?
- By the time segmentation is complete, strong mxp expression is detected in both ectoderm and mesoderm of the maxillary and labial limb buds.
- We have used experimental manipulation of chick embryos to test the causal role of Hox genes in patterning derivatives of the paraxial mesoderm.
- The most affected tissue being dorsal mesoderm; the notochord is disrupted and the tailbud fails to form.
- The stem cells for hematopoiesis in mammals are derived from mesoderm in the yolk sac blood islands and a region of the aorta.
- Derived from embryonic mesoderm, mesenchyme is the first connective tissue formed.
- The mesoderm also provides the mesenchyme (by sinking of cells from its epithelium into the extracellular matrix) from which organ development becomes possible.
- Expression is also detected variously in visceral endoderm, and anterior mesoderm and endoderm of the gut and pharynx in some vertebrates and amphioxus.
- Endoderm and mesoderm form from the lower layer of cells.
- The cells of the visceral mesoderm and dorsal vessel also express both genes.
- Clearly the establishment of independent Hox codes in the paraxial and lateral plate mesoderm would have significance for both the development and the evolution of vertebrates.
- Structures derived from ectoderm, mesoderm, and endoderm are commonly represented.
- Because neoblasts are likely derived from embryonic stem cells, a stem cell system may be even the original mode of mesoderm formation in the embryo.
- Crystal cells constitute a class of hemocytes derived from the head mesoderm.
- Cells from the ventrolateral dermomyotome migrate away from the midline forming a population of axially derived cells that differentiate within the lateral mesoderm.
Origin Late 19th century: from meso- ‘middle’ + Greek derma ‘skin’. |